/* Cursor 介绍站 - 浅蓝科技风全局样式 */
:root {
  --bg-primary: #e8f4fc;
  --bg-secondary: #d4ebf7;
  --bg-card: rgba(255, 255, 255, 0.85);
  --accent-blue: #0ea5e9;
  --accent-deep: #0284c7;
  --accent-cyan: #22d3ee;
  --text-primary: #0c4a6e;
  --text-secondary: #0369a1;
  --glow: rgba(14, 165, 233, 0.4);
  --nav-height: 56px;
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  font-family: 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', sans-serif;
  background: var(--bg-primary);
  color: var(--text-primary);
  min-height: 100vh;
  line-height: 1.6;
  overflow-x: hidden;
}

/* 背景网格/科技感 */
body::before {
  content: '';
  position: fixed;
  inset: 0;
  background: 
    linear-gradient(135deg, rgba(14, 165, 233, 0.06) 0%, transparent 50%),
    linear-gradient(225deg, rgba(34, 211, 238, 0.05) 0%, transparent 50%);
  pointer-events: none;
  z-index: 0;
}

/* 顶部导航 */
.nav-bar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--nav-height);
  background: rgba(255, 255, 255, 0.9);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(14, 165, 233, 0.2);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 2rem;
  padding: 0 2rem;
  z-index: 1000;
  box-shadow: 0 4px 24px rgba(14, 165, 233, 0.08);
}

.nav-bar a {
  color: var(--text-secondary);
  text-decoration: none;
  font-weight: 600;
  padding: 0.5rem 1rem;
  border-radius: 8px;
  transition: all 0.25s ease;
}

.nav-bar a:hover {
  color: var(--accent-deep);
  background: rgba(14, 165, 233, 0.12);
}

.nav-bar a.active {
  color: var(--accent-deep);
  background: rgba(14, 165, 233, 0.15);
}

.main-content {
  position: relative;
  z-index: 1;
  padding-top: var(--nav-height);
  min-height: 100vh;
}

/* 卡片通用 */
.card {
  background: var(--bg-card);
  border-radius: 16px;
  padding: 1.5rem 2rem;
  box-shadow: 0 8px 32px rgba(14, 165, 233, 0.12);
  border: 1px solid rgba(14, 165, 233, 0.15);
}

/* 按钮通用 */
.btn-primary {
  display: inline-block;
  padding: 0.75rem 1.5rem;
  background: linear-gradient(135deg, var(--accent-blue), var(--accent-deep));
  color: #fff;
  border: none;
  border-radius: 10px;
  font-weight: 600;
  cursor: pointer;
  transition: transform 0.2s, box-shadow 0.2s;
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 24px var(--glow);
}

.hidden {
  display: none !important;
}